ABSTRACT:

Approaches for S-expression tabular structure based language conversion. An SQL expression is converted into an S-expression tabular structure. A function table including a plurality of functions associated with S-expression tabular structure tabulated against at least one of a function name, a derived column and a derived table and an argument table including plurality of arguments associated with the S-expression tabular structure tabulated against at least one of an argument type, a function identifier linking the arguments to the function table, a computed from function, a reference to entity or a literal value, is generated based on the S-expression tabular structure. One or more functions associated with the S-expression tabular structure is converted to a pre-determined SQL based language, based on a language map of the pre-determined language and the function table and the argument table.